playertips overtime (#19150)

* playertips overtime

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* wtf

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* snark

* that too

* ok... why

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* hmm

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* ugh

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code/modules/tgui/modules/appearance_changer.dm

@@ -102,9 +102,9 @@
 		cut_data()
 
 /datum/tgui_module/appearance_changer/Destroy()
-	qdel(cam_screen)
+	QDEL_NULL(cam_screen)
 	QDEL_LIST(cam_plane_masters)
-	qdel(cam_background)
+	QDEL_NULL(cam_background)
 	return ..()
 
 /datum/tgui_module/appearance_changer/tgui_act(action, list/params, datum/tgui/ui, datum/tgui_state/state)

code/modules/tgui/tgui_window.dm

@@ -221,6 +221,9 @@
  */
 /datum/tgui_window/proc/close(can_be_suspended = TRUE)
 	if(!client)
+		release_lock()
+		status = TGUI_WINDOW_CLOSED
+		message_queue = null
 		return
 	if(can_be_suspended && can_be_suspended())
 		#ifdef TGUI_DEBUGGING